Nortel Meridian Companion Reference Manual page 98

Page 92 of 102 Appendix B: Using indoor external antennas
Type of antenna
indoor external
antenna
1. The direction of the beam is perpendicular to and outward from the mounting
surface.
Example
553-3601-106 Standard 2.00 September 1996
CDT to internal antenna and use the following formula to calculate the new
cell boundary value:
cell boundary value + 6 + (0.7 x cable length in meters) - antenna gain
Table 20 : External antenna gain
Antenna pattern
omnidirectional
directional
You require 33 ft (10 m) of RG 58/U coaxial cable for each indoor
omnidirectional antenna. The area is indoors and there are no offices in the
cell.
From Table 4 on page 19, the cell boundary value for no office indoors is -
73 dBm. You determine
You set the CDT transceiver to the internal antennas, and set the cell boundary
value to -60 dBm.
Note: Use indoor external antennas only if you are unable to cover the area
with a CDT transceiver located in an area where you can install Base
Stations.
0 dB in all directions
1
3 dB in direction of beam; 0 dB at
right angles to direction of beam
-73 + 6 + (0.7x10) - 0 = -60 dBm
Antenna gain